期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B2
页码：837-842
出版社：Copernicus Publications
摘要：Satellite captures and then transmits remotely sensed image to the earth station, which is further sent to the processing station. At processing station, it undergoes various types of geometric/radiometric corrections. The generated product has to qualify certain quality ascertaining tests, before reaching to the user. This paper discusses an expert system, which works as a quality check at data reception itself. The applied algorithm uses threshold-based rules to evaluate the absolute and relative behaviour of the even/odd ports of the Charge Coupled Devices (CCDs) used in satellite camera. The rule-thresholds are learned from the laboratory measured calibration data. Stringent conditions are simulated with the rules and thresholds for the histograms, so that any deviation from the rules of the package can be identified. This work was initiated with the Indian Remote Sensing mission Resourcesat-1, later incorporated for Cartosat-1 and Cartosat-2. It is successfully giving un-interrupted support as a quick-quality feedback (within one hour of data acquisition). The package is integrated in data-processing chain at the Earth Station and has a fully automatic approach of analysis
